Universal Linki upload my 'apple-app-site-associationx' file to server.Then i user the web site 'https://search.developer.apple.com/appsearch-validation-tool/' validator it.there is the error message : 'Error cannot fetch app site association'here is my 'apple-app-site-associationx' file's content :{ "applinks": { "apps": [], "details": [ { "appID": "4YPVN8PMEC.com.lexiangnetwork.sc", "paths": ["/deaplink","/wwdc/news/","/videos/wwdc/2015/","*"] }] }}and my server domain is 'https://scbucket.oss-cn-beijing.aliyuncs.com'which step is wrong? i need help